I adore cakes based on ground nuts or featuring alternatives to wheat flour, like polenta, which is maize, Zea mays, or what Americans call corn (when I was growing up we still used the word corn in the old English sense as a generic term for cereal grain)
Zea mays. Instead of a sandwich made from a loaf of processed bread and a deli meat, have a salad made from fresh greens and vegetables, and topped with a slice of chicken that you cooked yourself